Abstract
The effect of thermal fluctuations on systems modeled by anharmonic nonconservative Hamiltonians is investigated in the framework of interacting lattice cells each cell obeying to Langevin dynamics. Representative examples addressed to critical phenomena in ferroelectrics include polarization response of a single lattice cell, ergodicity breaking, and birth of a domain, and the effect of nonlocal electroelastic interaction all derived combining the Fokker–Planck, imaginary time Schrödinger, and symplectic integration techniques.
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Klotins, E., Kuznetsov, A. & Bely, A. Polarization response explored by joint Hamiltonian and stochastic approach. Appl. Phys. A 96, 549–555 (2009). https://doi.org/10.1007/s00339-008-5053-6
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DOI: https://doi.org/10.1007/s00339-008-5053-6